We'll add a stripped down driver variant for use in PBL. To share the register defines add a header file for them.
Signed-off-by: Sascha Hauer <s.ha...@pengutronix.de> --- drivers/i2c/busses/i2c-imx.c | 47 +------------------------------- drivers/i2c/busses/i2c-imx.h | 52 ++++++++++++++++++++++++++++++++++++ 2 files changed, 53 insertions(+), 46 deletions(-) create mode 100644 drivers/i2c/busses/i2c-imx.h diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c index 409c178e6a..4c7346063c 100644 --- a/drivers/i2c/busses/i2c-imx.c +++ b/drivers/i2c/busses/i2c-imx.c @@ -49,52 +49,7 @@ #include <i2c/i2c.h> #include <mach/clock.h> -/* IMX I2C registers: - * the I2C register offset is different between SoCs, - * to provid support for all these chips, split the - * register offset into a fixed base address and a - * variable shift value, then the full register offset - * will be calculated by - * reg_off = ( reg_base_addr << reg_shift) - */ -#define FSL_I2C_IADR 0x00 /* i2c slave address */ -#define FSL_I2C_IFDR 0x01 /* i2c frequency divider */ -#define FSL_I2C_I2CR 0x02 /* i2c control */ -#define FSL_I2C_I2SR 0x03 /* i2c status */ -#define FSL_I2C_I2DR 0x04 /* i2c transfer data */ -#define FSL_I2C_DFSRR 0x05 /* i2c digital filter sampling rate */ - -#define IMX_I2C_REGSHIFT 2 -#define VF610_I2C_REGSHIFT 0 - - -/* Bits of FSL I2C registers */ -#define I2SR_RXAK 0x01 -#define I2SR_IIF 0x02 -#define I2SR_SRW 0x04 -#define I2SR_IAL 0x10 -#define I2SR_IBB 0x20 -#define I2SR_IAAS 0x40 -#define I2SR_ICF 0x80 -#define I2CR_RSTA 0x04 -#define I2CR_TXAK 0x08 -#define I2CR_MTX 0x10 -#define I2CR_MSTA 0x20 -#define I2CR_IIEN 0x40 -#define I2CR_IEN 0x80 - -/* register bits different operating codes definition: - * 1) I2SR: Interrupt flags clear operation differ between SoCs: - * - write zero to clear(w0c) INT flag on i.MX, - * - but write one to clear(w1c) INT flag on Vybrid. - * 2) I2CR: I2C module enable operation also differ between SoCs: - * - set I2CR_IEN bit enable the module on i.MX, - * - but clear I2CR_IEN bit enable the module on Vybrid. - */ -#define I2SR_CLR_OPCODE_W0C 0x0 -#define I2SR_CLR_OPCODE_W1C (I2SR_IAL | I2SR_IIF) -#define I2CR_IEN_OPCODE_0 0x0 -#define I2CR_IEN_OPCODE_1 I2CR_IEN +#include "i2c-imx.h" /* * sorted list of clock divider, register value pairs diff --git a/drivers/i2c/busses/i2c-imx.h b/drivers/i2c/busses/i2c-imx.h new file mode 100644 index 0000000000..3e3e1317f2 --- /dev/null +++ b/drivers/i2c/busses/i2c-imx.h @@ -0,0 +1,52 @@ +#ifndef I2C_IMX_H +#define I2C_IMX_H + +/* + * IMX I2C registers: + * the I2C register offset is different between SoCs, to provide support for + * all these chips, split the register offset into a fixed base address and a + * variable shift value, then the full register offset will be calculated by: + * reg_off = reg_base_addr << reg_shift + */ +#define FSL_I2C_IADR 0x00 /* i2c slave address */ +#define FSL_I2C_IFDR 0x01 /* i2c frequency divider */ +#define FSL_I2C_I2CR 0x02 /* i2c control */ +#define FSL_I2C_I2SR 0x03 /* i2c status */ +#define FSL_I2C_I2DR 0x04 /* i2c transfer data */ +#define FSL_I2C_DFSRR 0x05 /* i2c digital filter sampling rate */ + +#define IMX_I2C_REGSHIFT 2 +#define VF610_I2C_REGSHIFT 0 + +/* Bits of FSL I2C registers */ +#define I2SR_RXAK 0x01 +#define I2SR_IIF 0x02 +#define I2SR_SRW 0x04 +#define I2SR_IAL 0x10 +#define I2SR_IBB 0x20 +#define I2SR_IAAS 0x40 +#define I2SR_ICF 0x80 +#define I2CR_RSTA 0x04 +#define I2CR_TXAK 0x08 +#define I2CR_MTX 0x10 +#define I2CR_MSTA 0x20 +#define I2CR_IIEN 0x40 +#define I2CR_IEN 0x80 + +/* + * register bits different operating codes definition: + * + * 1) I2SR: Interrupt flags clear operation differ between SoCs: + * - write zero to clear(w0c) INT flag on i.MX, + * - but write one to clear(w1c) INT flag on Vybrid. + * + * 2) I2CR: I2C module enable operation also differ between SoCs: + * - set I2CR_IEN bit enable the module on i.MX, + * - but clear I2CR_IEN bit enable the module on Vybrid. + */ +#define I2SR_CLR_OPCODE_W0C 0x0 +#define I2SR_CLR_OPCODE_W1C (I2SR_IAL | I2SR_IIF) +#define I2CR_IEN_OPCODE_0 0x0 +#define I2CR_IEN_OPCODE_1 I2CR_IEN + +#endif /* I2C_IMX_H */ -- 2.20.1 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox
